ANTHOCYANIN: RED CABBAGE pH INDICATOR<br />
(Variations Available)<br />
The Pigment Molecule Flavin Is Affected By pH.<br />
Solution color responds to changes in pH or hydrogen ion concentration. Very acidic solutions donate hydrogen ions, have low pH &amp; will turn the flavin red, neutral turns purple, bases accept H+ ions &amp; turn greenish-yellow.  Range of pH represented is 1-10